Ukrainian Drones Knock Out Two Rosneft Refineries, Cement Plant in Overnight Strikes

Ukrainian long-range drones struck deep inside Russian territory overnight on 14–15 September, hitting the Syzran oil refinery in Samara Oblast and the Sebryakovcement plant in Volgograd Oblast. The attacks have forced two major Rosneft refineries to halt crude oil processing, further straining Russia’s domestic fuel supply as the war enters its fourth year.

According to the Ukrainian Telegram channel Exilenova+, a fire broke out at the Syzran refinery after drones struck oil product storage tanks. Hours later, explosions were reported near cement kiln No. 5 at the Sebryakovcement plant in Mikhaylovka, Volgograd Oblast, sending heavy smoke over the facility (Ukrainska Pravda).

The damage at Syzran proved more consequential. Reuters, citing three industry sources, reported that the refinery’s main CDU-6 crude distillation unit – capable of processing 17,100 tonnes per day, or roughly 71% of the plant’s capacity – was destroyed. Repairs are expected to take at least a month. The secondary CDU-5 unit (7,100 tonnes per day) had already been out of commission since a July attack, meaning the entire Syzran refinery is now idle (Ukrainska Pravda).

The Saratov refinery, also owned by Rosneft, has fared no better. It shut down on 8 September after a drone strike caused equipment damage and fires. A restart attempt on 10–11 September was cut short by another Ukrainian attack. The plant had already been offline for several weeks in August. As of 16 September, both the Syzran and Saratov refineries – with a combined annual capacity of 15.5 million tonnes – had completely halted crude processing.

The Sebryakovcement plant’s operational status remains unclear, though the presence of firefighters and visible smoke suggests at least one kiln was damaged. Volgograd Oblast governor Andrei Bocharov has not commented publicly.

These strikes are part of a sustained Ukrainian campaign to degrade Russia’s energy infrastructure. By the end of August, Russia faced a petrol shortfall of about one-third, with domestic production covering only 70% of summer consumption and imports filling the rest. The loss of two refineries in the Volga region will deepen that deficit, forcing Moscow to divert more crude to other plants or rely on imports from Belarus and Kazakhstan.

Strategically, the attacks serve multiple purposes. They reduce Russia’s ability to fuel its military vehicles and aircraft, they cut a revenue stream that finances the war, and they force the Kremlin to redeploy air defence systems away from the front line to protect industrial sites. The Syzran refinery, located about 700 km from the Ukrainian border, is a reminder that no part of Russia’s oil industry is safe from Ukrainian drone reach.

The Ukrainian Defence Forces have not officially claimed responsibility for the strikes, but the pattern matches previous operations conducted by Ukraine’s Main Intelligence Directorate (HUR) and the Security Service (SBU). The Taganrog Aviation Scientific-Technical Complex, which repairs Russian military aircraft, was also reportedly hit on the same night, though that claim remains unconfirmed.

As repair crews begin assessing the damage at Syzran, the question is not whether Ukraine will strike again, but where. With the northern Russian pincer in Donetsk Oblast reportedly routed, Ukrainian commanders are increasingly focusing on paralysing Russian logistics and rear infrastructure – and oil refineries are firmly in their sights.